... Pool, and these telegrams are delivered to him (I think by the ferryman) on his "Peter-boat." But the regular time for this other Thames "fishery" is in winter. Then the eels "bed," i.e., bury themselves in the mud, and the eel man goes either "gravelling," that is, scooping up gravel from the bottom to deepen any part of the channel desired by the Conservancy, or doing these odd salvage jobs. Getting up sunken barges is one side of the business. These are raised by fastening ... — The Naturalist on the Thames • C. J. Cornish